diff options
| -rw-r--r-- | src/corelib/tools/qtimestamp_unix.cpp | 149 | ||||
| -rw-r--r-- | src/corelib/tools/tools.pri | 1 |
2 files changed, 150 insertions, 0 deletions
diff --git a/src/corelib/tools/qtimestamp_unix.cpp b/src/corelib/tools/qtimestamp_unix.cpp new file mode 100644 index 0000000..b82259f --- /dev/null +++ b/src/corelib/tools/qtimestamp_unix.cpp @@ -0,0 +1,149 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtCore module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qtimestamp.h" +#include <sys/time.h> +#include <time.h> +#include <unistd.h> + +#if !defined(QT_NO_CLOCK_MONOTONIC) +# if defined(QT_BOOTSTRAPPED) +# define QT_NO_CLOCK_MONOTONIC +# endif +#endif + +QT_BEGIN_NAMESPACE + +bool QTimestamp::isMonotonic() +{ +#if (_POSIX_MONOTONIC_CLOCK-0 > 0) + return true; +#else + static int returnValue = 0; + + if (returnValue == 0) { +# if (_POSIX_MONOTONIC_CLOCK-0 < 0) + returnValue = -1; +# elif (_POSIX_MONOTONIC_CLOCK == 0) + // detect if the system support monotonic timers + long x = sysconf(_SC_MONOTONIC_CLOCK); + returnValue = (x >= 200112L) ? 1 : -1; +# endif + } + + return returnValue != -1; +#endif +} + +static qint64 fractionAdjustment() +{ + if (QTimestamp::isMonotonic()) { + // the monotonic timer is measured in nanoseconds + // 1 ms = 1000000 ns + return 1000*1000ull; + } else { + // gettimeofday is measured in microseconds + // 1 ms = 1000 us + return 1000; + } +} + +void QTimestamp::start() +{ +#if (_POSIX_MONOTONIC_CLOCK-0 > 0) + timespec ts; + clock_gettime(CLOCK_MONOTONIC, &ts); + t1 = ts.tv_sec; + t2 = ts.tv_nsec; +#else +# if !defined(QT_NO_CLOCK_MONOTONIC) && !defined(QT_BOOTSTRAPPED) + if (isMonotonic()) { + timespec ts; + clock_gettime(CLOCK_MONOTONIC, &ts); + t1 = ts.tv_sec; + t2 = ts.tv_nsec; + return; + } +# endif + // use gettimeofday + timeval tv; + ::gettimeofday(&tv, 0); + t1 = tv.tv_sec; + t2 = tv.tv_usec; +#endif +} + +qint64 QTimestamp::elapsed() const +{ + QTimestamp now; + now.start(); + return msecsTo(now); +} + +qint64 QTimestamp::msecsTo(const QTimestamp &other) const +{ + qint64 secs = other.t1 - t1; + qint64 fraction = other.t2 - t2; + return secs * 1000 + fraction / fractionAdjustment(); +} + +void QTimestamp::addMSecs(int ms) +{ + t1 += ms / 1000; + t2 += ms % 1000 * fractionAdjustment(); +} + +qint64 QTimestamp::secsTo(const QTimestamp &other) const +{ + return other.t1 - t1; +} + +void QTimestamp::addSecs(int secs) +{ + t1 += secs; +} + +bool operator<(const QTimestamp &v1, const QTimestamp &v2) +{ + return v1.t1 < v2.t1 || (v1.t1 == v2.t1 && v1.t2 < v2.t2); +} + +QT_END_NAMESPACE diff --git a/src/corelib/tools/tools.pri b/src/corelib/tools/tools.pri index 3599cc7..b8a0ae1 100644 --- a/src/corelib/tools/tools.pri +++ b/src/corelib/tools/tools.pri @@ -83,6 +83,7 @@ SOURCES += \ symbian:SOURCES+=tools/qlocale_symbian.cpp mac:SOURCES += tools/qtimestamp_mac.cpp +else:unix:SOURCES += tools/qtimestamp_unix.cpp else:SOURCES += tools/qtimestamp_generic.cpp #zlib support |